content: /* ===========================================================
   * JFreeChart : a free chart library for the Java(tm) platform
   * ===========================================================
   *
   * (C) Copyright 2000-2012, by Object Refinery Limited and Contributors.
   *
   * Project Info:  http://www.jfree.org/jfreechart/index.html
   *
   * This library is free software; you can redistribute it and/or modify it
   * under the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation; either version 2.1 of the License, or
   * (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
   * License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
   * USA.
   *
   * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. 
   * Other names may be trademarks of their respective owners.]
   *
   * -----------------------
   * MovingAverageTests.java
   * -----------------------
   * (C) Copyright 2003-2008, by Object Refinery Limited and Contributors.
   *
   * Original Author:  David Gilbert (for Object Refinery Limited);
   * Contributor(s):   -;
   *
   * Changes
   * -------
   * 14-Aug-2003 : Version 1 (DG);
   * 04-Oct-2004 : Eliminated NumberUtils usage (DG);
   *
   */
  
  package org.jfree.data.time;
  
  import org.jfree.chart.date.MonthConstants;
  import org.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  /**
   * Tests for the {@link MovingAverage} class.
   */
  public class MovingAverageTest  {
  
      private static final double EPSILON = 0.0000000001;
  
  
  
  
  
      /**
       * A test for the values calculated from a time series.
       */
      @Test
      public void test1() {
          TimeSeries source = createDailyTimeSeries1();
          TimeSeries maverage = MovingAverage.createMovingAverage(
              source, "Moving Average", 3, 3
          );
  
          // the moving average series has 7 items, the first three
          // days (11, 12, 13 August are skipped)
          assertEquals(7, maverage.getItemCount());
          double value = maverage.getValue(0).doubleValue();
          assertEquals(14.1, value, EPSILON);
          value = maverage.getValue(1).doubleValue();
          assertEquals(13.4, value, EPSILON);
          value = maverage.getValue(2).doubleValue();
          assertEquals(14.433333333333, value, EPSILON);
          value = maverage.getValue(3).doubleValue();
          assertEquals(14.933333333333, value, EPSILON);
          value = maverage.getValue(4).doubleValue();
          assertEquals(19.8, value, EPSILON);
          value = maverage.getValue(5).doubleValue();
          assertEquals(15.25, value, EPSILON);
          value = maverage.getValue(6).doubleValue();
          assertEquals(12.5, value, EPSILON);
      }
  
      /**
       * Creates a sample series.
       *
       * @return A sample series.
       */
      private TimeSeries createDailyTimeSeries1() {
  
          TimeSeries series = new TimeSeries("Series 1");
          series.add(new Day(11, MonthConstants.AUGUST, 2003), 11.2);
          series.add(new Day(13, MonthConstants.AUGUST, 2003), 13.8);
          series.add(new Day(17, MonthConstants.AUGUST, 2003), 14.1);
          series.add(new Day(18, MonthConstants.AUGUST, 2003), 12.7);
          series.add(new Day(19, MonthConstants.AUGUST, 2003), 16.5);
          series.add(new Day(20, MonthConstants.AUGUST, 2003), 15.6);
          series.add(new Day(25, MonthConstants.AUGUST, 2003), 19.8);
          series.add(new Day(27, MonthConstants.AUGUST, 2003), 10.7);
          series.add(new Day(28, MonthConstants.AUGUST, 2003), 14.3);
          return series;
  
      }
  
  }
  